Chapter 3A (003) September 24, 2009

Chapter 3A (003) September 24, 2009 - Chapter 3 Structure...

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Chapter 3 September 24, 2009 Structure of the nervous system o The nervous system o The neuron o Structure & function Review questions: 1) When conducting research, choosing participants so that the sample has the same characteristics of the population. Representative sample 2) The measure of central tendency that represents the most commonly occurring value in the data set is referred to as Mode ______________________________________________________________________ Biological foundations of behavior Structure of the nervous system The nervous system (See Figure 3.7, P. 96) Peripheral nervous system : branches out of the CNS to all parts of the body Afferent pathways: Neurons that carry signal from the sensory receptor cells to the brain and spinal cord Efferent pathways: carry messages from the brain and spinal cord to effect cells in the muscles and glands Somatic nervous system Nerve fibers running to skeletal muscles Control voluntary actions
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Autonomic nervous system Control muscles running to internal organs and glands Sympathetic division Mobilizing the body’s resources for action Increase heart rate, blood pressure Inhibits digestion Parasympathetic division Dominates under conditions of relaxation Conserve and replenish body’s energy Decrease heart rate and blood pressure Biopsychology: deals with the biological bases of our thoughts. Feelings and behaviors Where are the memories stored in the brain? Why do we experience pleasure or pain? Neuropsychological tests: Measure of verbal and non-verbal behavior that are known to be affected by brain damage Brain damage study Animal studies: Areas of the brain are damaged or surgically remove Human studies: Accident, stroke, or surgery Studying the brain
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